Let's talk Nukes. I want to talk about offensive and defensive tactics. I'm focusing on multiplayer games. I'll list some questions and give my input from some of my experience. Please add to this with your experiences. Obviously this is advanced warfare. Defense: How do you best limit the damage of a nuclear attack? On the homeland. Minimize the units in your cities. Keep marginal units in your cities. (infantry or below) 1 in internal cities, 2 in your border cities. Keep your best units (tanks, marines, etc) at least two squares away from the cities sitting on railroads to they can move quickly. Preferably at least 5 squares from the border or ocean to get out of range of Tactical Nukes. If a convental attack happens, keeping 2 units in the city gives you time to replenish with your better units. If a city gets hit, most of your strong units will only be badly damaged. Immediately protect the city with new full strength units that are sitting nearby. Then move the damaged units out of the city to a safer central square (not a city). Where you've got medics awaiting. Especially if you have a lot of units damaged. If you keep damaged units in the city to heal, another attack will completely destroy all the damaged units. On the ocean Don't have one huge fleet sitting on a single square. This will be a sitting duck for Tatical Nukes. Instead have multiple smaller fleets within 2-4 squares away from each other. Probably a single Battleship, Destroyer, and Carrier with planes. More fleets the better of course. This way if one fleet gets hit you can protect the damaged fleet with healthy ships until it has a chance to heal. Prior to having SDI, can you prevent an attack altogether? Can your own nuke be destroyed by a nuclear attack? If so, how do you prevent this? Offense: On this I've got more questions than answers Are the effects of a detonated Tactical Nuke vs ICBM different? (Assuming they can hit the same city) Hitting a city once will greatly damage the units inside. If I hit it again right away will every unit in the city be killed so I can just walk right in? (see my defense for this above) What is the most effective way to invade a Civ that has nukes? By land or by sea? Can my forces be nuked if they are next to my enemy's city? Can you nuke your own land? Haven't tried this yet. If so I presume this would damage the units in the city as well. If they have nukes, is it worth trying to keep a city you just conquered or punt and just raise it?